Automatic gun



. 1,444,890.- C. G. SWEBILIUS.

AUTOMATIC GUN.

I FILED JUNE Il, ISIS, JZ@

Feb. 13, 1923.

A TTORN E YS.

, a citizen oit the IUnited States,

is a firing mechanism the gun.

. Fia. 1.

v3 and the firing p-in 4.

narra4 CARL G. SW'EIBILIUS. OF NEW MENTS, T0 THE MARLIN CUT, A CORPORATION OF DELAWE.

Y Application mea fune 11,.

To'a-ZZ whom i may concern.'

Be it known' that l, CARL G. Swniunns, residing atA -New Haven'. county of New Haven, State of Connecticut, have invented a certain new` and useful Improvement in Automatic Guns, of which the following is a spec-iiication. v My invention relates to automatic lires arms and pertains more especiallyto the tiring mechanism of suoli guns,

The object of this invention is the provision oil means whereby impulses or pulsations of a higher frequency than the rate or" re ot' the gun may be utilized to fire the gun whenever it is breeched. bject of this invention such that an automatic gun equippedtherewith may be used upon airplanes in conjunction with 'a synchroniser system. t.

A further object of the invention is the arrangement of the elements of the .firing mechanism of gun whereby a. reciprocating member caused to oscillate the trigger.

ln the drawings, only the elements ot' the firing mechanism and Such elements of the actuating mechanism as are modified are shown. This is marefly for thesake of clearness.

Fig. l. is a An additional,

sectional view ot the breech of Fig.v 2 is a section taken on the'lirn'e 2-4-2 of 3 is a detail of the tiring mechanismthe parts being positioned differently from that ot Fig. 1. H

Referring now tothe drauf'ings, 1 represents the barrell oi' the gun. and 2 denotes the receiver. The breechvbolt is-'designated The sliding action rod, which 4is numbered-5 and cut away at E its lower edge to provide a shoulder 6,' one end ofwhich is curved as at 6, reciprocates They other end known manner on the guides 5a A bell crank 7 having the arms 8 andA 9 is The end 8 of this lever eu-j shoulder 6 and is caused to by the curved shoulder, 9 of this lever extends up in the well gages with thc rotateslightly against the action of lation PATENT carica,

HAVEN, coNNnc'rIcU'r. AssIGNoa, BY misiva Assiem-l FIREARMS CORPORATION, or NEW HAVEN, CONNECTI- Aumom'rro GUN.

1918. SerialNo. 239,359.

14 is the hammer spring and 15 the haml mer spring-guide.4 The trigger or detent 16 and the sear 17 are-'pivotally mounted on the pin 18. t The trigger is provided with a. forward extensionl` and also ywith a rearward extension having a cam surface 161J thereon. 16I is an upstanding part of the trigger which 'extends through the top of the lock container. The scar 1'( is provided lwith a laterally offset downwardly project. 1n 9 of the trip lever. arried by theA se'ar is vthe spring 181L which bears against 'the top hold the sear down. A the rear end of the trigger 16 to Vforce the Vrear end thereof upwardly.

The bracket'22 is attached tothe gun in any suitable manner for'the trigger motor of the operation of the gun,

and strikes the cam' surface 16b of the.trig' ger, causing the trigger to be operated ts springf19.;

operated during ed with this film-g When a gun prov con-nectlon wlth a,

mechanism is used il stantly oscillated cam surface 16b'or against the extension'1'6'..

well known manner.

the engagement ot the arm 8 with the curved surface 6 on the sliding caused a slight rotation of the trip lever I which results in a slightrotation ofthe Sear 9 with the of the arm If it so happens' that due to the engagement arm 17a-of the sear.V

arm 17a which contacts with the arm of the ilock container and tends'til y spring 19 coacts with and acts as a support Y aA synchronizesys#l tem, the piston 23 of which is continuously 9o The V'sliding action rod reciprocates the breech bolt in the soon as the breech boltis in its locked posi- -V i' tion th'e sear is raised dueto the fact that .95 action rod 5 hasthetrigger is raised :at this instant, as

shown in ,Figc 3, are, mentiras ,-.re-

B5 synchronizing system, the trigger 16 iS 00111 l.

in la suitable manner, for4 example,` by the reciprocating piston 23 of` a synchronizing system striking against the leased upon the disengagement of the sear from the shoulder 13, and will strike against the firing pin 4 causing the firing of the Agun. But if the trigger isin the osition 5 shown in Fig. 1 at this instant the sioulder 13 will engage with the projection 16 upon the raising ofthe sear. At the next oscil-` lation of the trigger, however, this engagement will be broken, and the vgun fired.

The sliding action rod will then be forced rearwardly carrying therewith the breech bolt The bolt will contact with the hainmer and force the saineinto lposition so that the Sear under the influence of the spring i5 18a will return into engagement with the shoulder 13. This is possible due to the fact that upon the rearwardA movement ot' the vaction rod the cainsurtacefin 'is no longer Yin engagement with the arm 8 and the lever 7 is free to rotate slightly inA a clockwise direction. v

A gun provided with this arrangement of trigger, scar and trip lever can also be lused separately from any synchronizing system. By holding down the rear endet the trigger the gun` Will fire off the scar 'andi will operate p automatically to ie as, soon as the breach bolt is in position. This is due tothe fact that as soon as the breach bolt is in this position, the sea'r is `raised due to the placing ofthe cam surface'a. f

By means of this type of firing mecha- `nism, impulses set up by the generator yof a lsynchronizimg system mayI be' utilized to Iblades of the propeller of the airplane.

, 'i --I claim .'isrny` invention:

1. In an automatic gun, a receiver hav- 40 ing aslot in one Wall, a breech mechanism 35 cause' theiring of the gun at such times that the bullets will f always pass between' thev therein, a vhousing carried by the'L receiver, a.

hammer 4,pivotally mounted in saiid housing and adapted to swing in said slot,a shoulder onsaid hammer,I a sea-r and a trigger pivotally mounted in said housing and adapted tov engage, Said shoulder, and 'means'to operate .said trigger. 1 r u.: 2. Ink a'n automatic gun, a receiver having a slot in one wall, a breech mechanism therehammer pivotallymounted in said housing andadapted to swing in said Slot,l a shoulder `on, said hammer, ay scar and a trigger pivotally mounted in said housing and fadapted to engage said shoulder, and anpiston arrangedto oscillate said triggeruponreciprocation of the piston., l. 3,v In an automatic gun, a receiver having a Slot in one wall,a breech mechanism therein, a vhousing carried by the receiver, ai

offset downwardly-extending arm on said sear, and a lever pivotally mounted on the receiver to engage said arm and adapted to be actuated upon reciprocation ot' the action rod. f

4. In an automatic gun, a receiver having a slot in one wall thereof, a breech mechanism therein, a housing carried by the receiver, a hammer pivotally mounted in said housing and adapted to extend through said slot, a shoulder on said hammer, a sear auft a trigger coaxially mounted in said housing and adapted to engage said shoulder. an arm on said trigger having a cam surface and a piston adapted to engage said cam surface.

In an automatic gun, a receiver having a slot in one wall thereof, a breech mechanism iiiovablyiniountcd in said receiver, a housingr carried by said wall, a hammer mounted in said housing and arranged to cooperate with said breech mechanism through said sint, a trigger and a scar in said housing adapted to engage said haininer, and a common pivot pin for said .scar and trigger.

6. 11i-an automatic gun, a receiver having a slot in one wall thereof, a breech mechanisin movably mounted in said receiver, a housing carried by said wall, a hammer mounted in said housing and arranged to cooperate with said breech mechanism through said slot, a trigger and a scar ;oii\'iiilly mounted in said housing and arranged to engage said hammer, vand means to discngage said scar from said hammer.

T. 'In an autoinaticgun, a receiver having a slot in one wall thereof, a breech mechanisni movably mounted in said receiver, a housing carried by said wall, a hammer mounted in said housing and arranged to cooperate with said breech miichauisin 'thrciiiigh said slot, a. trigger and a scar coaxially mounted in said housing and adapted to engage said hammer, and. means mounted on the gun independently oit the scar ior actuating the scar at the breaching ot the nisin inovably mounted in said receiver, a

in, a housing carried by the receiver, ai hammer pivotally mounted in said housing and'` Vadapted to swing in said slot, a shoulder ou-l said hammer, a sear and a trigger-.pivotally,I

mounted in said housing and adapted to engage said shoulder, aii action rod operatively housing carried by said wall, a hammer pivotally mounted in said housing and adapted to swing inA said Slot to cooperate with said breech mechanism, a trigger and a scar pivotally mounted on a common pin in said housingand. adapted to engage said hammer.

9. ln an auton'iatic gun, a. receiver, a breech in'iechanism therein, a housing attached to thecxterior ofthe receiver, a hammer mounted in ysaid housing and operativelyy associated with said breech mechanism. a. scar and `a` triggerniounted in said housing and arranged to engage said ham nier, a common pivot pin. for aid scar associated with the breech mechanism, au'

Lacasse l ltrigger-means to disengage said sear.' from' n said hammer, and means .to 'disengage trigger from s'ajid hammer. 1 f

.'pivotally mounted in said housing and vadapted-to swing in said slot, ajsear and a tally mounted. in s aid housing tri gerl piv'` ito engage said shoulder, and

an adaptel meanstofactuate said searand trigger.

11. In. an automatcgun, a receiver, a

`breech mechanism therein, a hammer supported exterior of said receiver and opi5' nism, a trigger to engage said hammer, and

reciprocable means for 35 anism.

eratively associated with said breech mech'ager from -s'aid hammer.

' 12. Inpgan automatic gun, a receiver,

breechniechaiiism therein, ahammer supported exterior of said receive-r and opera'- tivelyassociated with said breech 'mechanism, a sear and a trigger adapted to engage said hammer', a common pivot pin for said Sear and trigger, means for disengaging said searfrom said hammer, and means for disengaging said' trigger from said hammer.-

.13. :ln/an automatic gun, a receiver, a breech mechanism therein, a housing at- 'tached to the exterior of said receiver, a hammer in said housingand operatively vas; sociated with said-'breech mechanism, a trigger and a scar mountedon a common pin in said housing and adapted to engage said hammer, meansfor disengaging said sear from said hammer and mea-ns for-.disengagingsaid trigger from said hammer..

14. In an autoinlaticf gun, a receiver,. a breech mechanisn'ivv therein, a housing attached to, the exterior `otsiiid receiver, a hammer having a shoulder pivotaliy mounted in saidhousing and operatively associated withsaid breech mechanism, asea-r and a trigger pivotally mounted in said housing and adapted to engage said shoulder, and

reciprocable means for operating said trig- 15. Ink an automatic gun, a receiver, a

.breech mechanism therein. a striking mechanism supported exterior of said receiver and operatively associated With said breech mechanism,

osition` a common pivot pin for said memlers and means to disenga-gefsaid members from said striking mechanism.

16. In an automatic gun,"` a. receiver, a breech mechanism therein, a housing exterior of said receiver, a striking mechanism in said housing and operatively associated with said breech mechanism, a plurality of detents for said .striking mechanism, a commonpivot pin for said detents and means to disengage said detents from said striking mechdisenga-ging said triga pair of members to engagesa'id striking mechanism to hold it in one of saidreceiver, striking mechanism in said eating member and a cam surface for releasing said deten't from said striking mechamsm.

18. In anautomatic gun, a receiver having a siot, a breech mechanism therein, a housing carried by saidreceiver, a hammer mounted in said housing and vadapted to extend through said s1ot` to., cooperate With said breech mechanism, a detent for said hammer.

and means comprising a reciprocating member and a camsurfaoe orr'eleasing saiddetent from said hammer.

Aa slot in its top wal-l, abreech mechanism therein, a housing carried by said receiver, a hammer pvotally mounted in said receiver -and adapted to swing through 'said-slot to. cooperate with said'breech mechanism, a de tent for said hammer pivota-lly mounted in. said housing and means comprising a recip- ,roeating member for reieasing saidrv detent from said hammer," j

20. In an automatic gun, ai. receiver having a slot in its vtop wali, a breech mechanism therein, a housing carried bysaid' receiver, a hammer pivotally mounted in said receiver and adapted to cooperate Withsaid breech mechanism through saidslot, a-sear to'enf" gage said hammer, means to disengage' said sear Jfrom said hammer,

member for releasing said detent.

21. In an automatic gun, a receiver-,aA

anism, a pin carried by said housing, and a plurality of detents for `said hammer'pivot-- ally mounted on ,said pin'.

22. In an automatic gun,

19. In an automatic gun, a receiver having a datent for said? hammer, and means comprising a v-ibratory a receiver, a 'd breech'mechanism therein,'a hammer having a shouldersupported exterior saidreceiverA and operatively associa-ted' with said breech mechanism, a plurality of detents for engaging said shoulder, and means for tripping said detente.

23.-In an automatic gun, a receiver, a

breech mechanism therein a hammer su i portedexterior of said receiver and op.-

eratively associated with said vbreech mechanism,` a hammer engaging member, and re-l ciprocable meansfor actuating said hammerengaging .member. 24. In an automatic gun, a receiver, -a

ber'supported exterior of said receiver an operatively associated withy said breech mechanism, a detent for said striking membreech mechanism therein, a lstriking mem-- bel-z, 4e cam' on Said detent, and a recprooable Ylember adapted to engage said cam.

25. In an automa-tic gun, a receiver, a `reech mechanism therein7 a striking memer supported exterior of said receiver and operatively associatedwith said breech mech.- anism, a detent `for said striking member pvotally mounted Aexterior of said receiver, an oblique Surface ou said detent, `and 'u reciprocable rod arranged to engage said l0 oblique Surface.

In te timony whereof. I hereunto aix my Signature.

CARL SG. SWEBILIUS. 

